Home / 20,784,806.86-31,178,954.42-7,657,798.63

Finding the Fourth Proportional to 20,784,806.86, 31,178,954.42 and 7,657,798.63

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Solution

The fourth proportional to 20,784,806.86, 31,178,954.42 and 7,657,798.63 is: 11,487,340.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784,806.86 : 31,178,954.42 = 7,657,798.63 : x
  2. Step 2: Convert to fraction form
    20,784,806.86/31,178,954.42 = 7,657,798.63/x
  3. Step 3: Cross multiply
    20,784,806.86x = 31,178,954.42 × 7,657,798.63
  4. Step 4: Simplify right side
    20,784,806.86x = 238,762,154,248,124.69
  5. Step 5: Solve for x
    x = 238,762,154,248,124.69/20,784,806.86
  6. Step 6: Final answer
    x = 11,487,340.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.